Box type UV aging test chamber

This box type UV aging test chamber can simulate environmental conditions such as UV, rain, high temperature, high humidity, condensation, and darkness in natural climate. By reproducing these conditions, they can be merged into a cycle and automatically executed to complete the cycle. This is the working principle of the UV aging test chamber.

Main functions

thisBox type UV aging test chamberUsing imported UVA-340 fluorescent ultraviolet lamps as the light source, it can simulate the hazards caused by sunlight, rain, and dew. The UV weather resistant box uses fluorescent ultraviolet lamps to simulate the effect of sunlight exposure, and uses condensed moisture to simulate dew. The tested material is placed in a cyclic program of alternating light and moisture at a certain temperature for testing, and an accelerated weather resistance test is conducted on the material to obtain the results of its weather resistance. The UV box can reproduce the hazards that occur outdoors for months or years in a matter of days or weeks. The types of hazards include fading, discoloration, loss of gloss, powdering, cracking, turbidity, bubbles, brittleness, strength, deterioration, and oxidation. This machine includes a sprinkler system

thisBox type UV aging test chamberIt can simulate environmental conditions such as UV, rain, high temperature, high humidity, condensation, and darkness in natural climate. By reproducing these conditions, it can merge them into a cycle and automatically complete the cycle. This is the working principle of the UV aging test chamber. During this process, the device can automatically monitor the temperature of the blackboard and sink; By configuring the irradiance measurement and control device (optional), the light irradiance can be measured and controlled to stabilize at 0.76W/m2/340nm or the set value, greatly extending the service life of the lamp.

Main functions and technical parameters

A.光 源 ：

The light source uses 8 imported ultraviolet fluorescent lamps with a rated power of 40W as the light source.

Ultraviolet fluorescent tubes are distributed at the top of the machine.

There are UVA-340 and UVB-313 light sources available for users to choose from and configure.

The emission spectrum energy of UVA-340 lamps is mainly concentrated at the wavelength of 340nm, while the emission spectrum of UVB-313 lamps is mainly concentrated around the wavelength of 313nm.

We use UVA-340 fluorescent tubes because the energy output of the fluorescent light gradually decreases over time. In order to reduce the impact of light energy attenuation on the experiment, this test box replaces the old tube with a new tube every 1/4 of the fluorescent lamp life among all four tubes. This way, the ultraviolet light source is always composed of new and old lamps, resulting in a constant output of light energy.

The effective service life of the lamp tube can be around 1600 hours.

B. Electrical control:

a. The blackboard temperature and condensation temperature are both controlled by a controller

b. The rest mostly use imported electronic components.

Uniformity of irradiance: ≤ 4% (at the sample surface) Blackboard temperature monitoring: Standard Pt-100 blackboard temperature sensor is used to accurately control the sample surface temperature during the testing process.

Blackboard temperature setting range: BPT 40-75 ℃; Blackboard temperature control accuracy: ± 0.5 ℃;

c、 Water tank temperature monitoring: During the cyclic testing process, there is a testing section that involves the dark condensation process, which requires the box to generate saturated water vapor at a relatively high temperature. When the water vapor encounters a relatively cold sample surface, it will condense dew on the sample surface. The sink is located at the bottom of the box and is equipped with an electric heater.

Water tank temperature control range: 40~60 ℃

d、 The test chamber is equipped with time control, ranging from 0 to 530H59M, and power outage memory function.

e、 Safety protection device:

Low water level alarm in the sink to prevent the heater from burning out.

C. Material for box production:

The inner lining of the box is made of SUS304 # stainless steel plate

The shell is made of SUS304 # stainless steel plate

The sample rack is made of stainless steel and aluminum alloy mesh frame, which facilitates the storage and retrieval of samples

D. Overview of the whole machine:

Size: Approximately H1350mm x W1720mm x D 600mm

◆ Weight: Approximately 150 kgE. Host requires working environment conditions:

Power requirements: 220V ± 5%, single-phase three wire, 50Hz, 8A, requires 10A slow melting fuse.

Environment: 5~35 ℃, 0~80% RH, good ventilation, clean indoor environment.

◆ Work area: about 200 × 200cm Drainage: There needs to be a drainage ditch on the floor near the host. For ease of movement, casters are installed at the bottom of the instrument, and the position of the testing machine is fixed with a U-shaped ring.